package syn;

import java.util.ArrayList;
import java.util.List;

/**
 * @author zfj
 * @date 2021/10/17 -12:10
 * 线程不安全的集合
 */
public class UnsafeList {
	public static void main(String[] args) {
		List<String> list=new ArrayList<>();
		for (int i = 0; i < 10000; i++) {
			new Thread(()->{
				synchronized (list){
					list.add(Thread.currentThread().getName());
				}
			}).start();
		}
		try {
			Thread.sleep(3000);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		System.out.println(list.size());
	}
}
